Synthesis of new fluorite-related rare earth oxides Ln $${\text{Ln}}_{2}^{\prime }$$ Ln 2 ′ MO7 (Ln, Ln′ = rare earths; M = Nb, Sb, Ta), their structures and magnetic properties by calorimetry measurements

DOI PDF Web Site Web Site 参考文献38件

書誌事項

公開日
2016-05-02
資源種別
journal article
権利情報
  • http://www.springer.com/tdm
DOI
  • 10.1007/s10973-016-5491-x
公開者
Springer Science and Business Media LLC

この論文をさがす

説明

New fluorite-related quaternary rare earth oxides Ln $${\text{Ln}}_{2}^{\prime }$$ MO7 (Ln = Nd, Gd, Tb; Ln′ = Lu and Y; M = Nb, Sb, Ta) were prepared. They crystallize in an orthorhombic superstructure of cubic fluorite with space group C2221. The results of the Rietveld analysis indicate that there exists some disordering of the Ln and Ln′ atoms at the eight-coordinate site and the seven-coordinate site. These compounds are paramagnetic down to 1.8 K except for TbLu2SbO7. Magnetic susceptibility measurements show that TbLu2SbO7 antiferromagnetically orders at 3.0 K. Specific heat measurements also show a λ-type anomaly at the same temperature. The analysis of the magnetic specific heat for TbLu2SbO7 indicates that the magnetic transitions are due to the ground doublet state of Tb3+ ions.

収録刊行物

参考文献 (38)*注記

もっと見る

関連プロジェクト

もっと見る

問題の指摘

ページトップへ